I have a terra exotica maxi fogger humidifier plugged into a humidity control 2. I have it set up so that the humidifier turns off when it the terrarium is at 68% humidity. Everything was working fine until yesterday. The humidifier would turn on for a little bit every 20 minutes and then turn off again. Now the humidifier doesn't turn off at 68% humidity. It just keeps going until it runs out of water. I bought a new humidity control 2 because I thought maybe the first one was getting old, but its only been three weeks and now the new one isn't working. How can I fix this?